Onset of Mechanical Stability in Random Packings of Frictional Spheres

Jerkins, Melissa and Schröter, Matthias and Swinney, Harry and Senden, Tim and Saadatfar, Mohammad and Aste, T. (2008) Onset of Mechanical Stability in Random Packings of Frictional Spheres. Physical Review Letters, 101 (1). ISSN 0031-9007. (Full text available)

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http://dx.doi.org/10.1103/PhysRevLett.101.018301

Abstract

Using sedimentation to obtain precisely controlled packings of noncohesive spheres, we find that the volume fraction ϕRLP of the loosest mechanically stable packing is in an operational sense well defined by a limit process. This random loose packing volume fraction decreases with decreasing pressure p and increasing interparticle friction coefficient μ. Using x-ray tomography to correct for a container boundary effect that depends on particle size, we find for rough particles in the limit p→0 a new lower bound, ϕRLP=0.550±0.001.

Item Type: Article
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: Tomaso Aste
Date Deposited: 20 Mar 2012 16:13
Last Modified: 28 Mar 2012 09:14
Resource URI: http://kar.kent.ac.uk/id/eprint/29178 (The current URI for this page, for reference purposes)
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